Window-stop.



PATENTED JULY 5; 1904. W. F. SHAW.

WlNDOW STOP APPLICATION FILED MAR. 16, 1904.

N0 MODEL.

mg Inf/711a Uzi/r Patented July 5, 1904.

NITED STATES PATENT OFFICE.

WALLACE F. SHAW, OF WESTFIELD, MASSACHUSETTS.

WINDOW-STOP.

SPECIFICATION forming part of Letters Patent No. 764,310, dated July 5, 1904.

Application filed March 16, 1904.

To all whmn it may concern:

Be it known that I, WALLACE F. SHAW, a citizen of the United States of America, and a resident of Westfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Win- I dew-Stops, of which the following is a full,

clear, and exact description.

* This invention relates to window-stops of a kind adaptable forv application on one of the vertical side bars or members of a sash and having a. bolt or stop member combined and arranged in the device with the capability of being projected transversely beyond the face of the sash side bar so as to limit the extent which one widow-sash may be moved open I relatively to the other and with the capabilopening with an abutment across but not completely closing said opening, a bolt having a step-shaped outer extremity, the step thereof being engageable with said abutment and said bolt being of such shape and size relatively to the chamber therefor in the casing that it may have a tilting movement therein, so that when forced entirely into the casing its stop extremity may be in endwise engagement within and against said abutment, and a spring located in the inner end of the casing and exerting an outward force against the bolt.

The improved device includes additional parts and features of construction, as hereinafter described, pointed out in the accompanying drawings, and set forth in the claims.

In the drawings, Figure 1 is a sectional View through portions of two Window-sashes with the improved stop device applied within the side bar of one of the sashes, the stop-bolt being shown as distended. Fig. 2 is a sectional view longitudinally through the casing of the device, the stop-bolt being shown as forced and engaged in its inward disposition,

Serial No. 198,483. (No model.)

whereby it is rendered inoperative for limit 1 ing the movement of the one sash relatively to the other. Fig. 3 is a cross-sectional view as taken on the line 3 3, Fig. 1. Fig. 4: is an outer end view.

Similar characters of reference indicate corresponding parts in all of the views.

In the drawings, A represents the upper sash, of whlcha is one of the vertical side bars or members thereof, and B represents the lower sash, of which 6 is its meeting-rail at the top, while it indicates the meeting-rail of inner end and an open outer end, said outer end opening having, however, a wall or abutment f extending partlally across it, a desirable and preferred form of such abutment being approximately a crescent shape, as represented 111 Fig. 4:, and sand device furthermore consists in the bolt or plunger r of a general cylindrical form, having its outer extremity made step-like, whereby there is a stop member it and a shoulder 71, said stop member 7t having a thickness somewhat less than the unobstructed opening between the Iabutment or wall f and the opposite wall of the casing. The inner and larger portion of the bolt is tapered or beveled along one side, as indicated at A2, suchside having a longitudinal groove orsplineway m therein, in which engages the spline or rib 91., provided longitudinally along the inner wall of the casing, and the stop device furthermore includes a spiral spring 0, located within the inner end of the casing and reacting in an outward direction with a tendency to distend the bolt, so that its extremity it will, as clearly inclicated in Fig. 1, have a position across the path of movement of the meeting-rail b of the lower sash. The bolt by reason of its tapered side mentioned may be tilted within the casing after it has been bodily slid inwardly so that the outer end of the stop member it is inside of the inner wall of the abutment f, whereby the outer end of the portion it may be engaged against the abutment, as clearly represented in Fig. 2, and of course when the parts are in the relations here shown the stopdevice is rendered inoperaw tive as awvindow-cheek, and of course movements will be permitted to either sash to the fullest extent desired; but in order to again bring the stop into action it is only necessary to tilt the bolt to bring it axially longitudinal with the socket therefor in the casing, whereupon the reacting spiral spring will throw it outward to its proper position, and is limited by the step t'engaging the abutment f. For facilitating the tilting movements of the bolt as and for the purposes set forth a notch t is formed in the outer end of the stop portion 71, of the bolt to receive the engagement therein of a thumb-nail or sharp-pointed implement, and the hollowing out of the edge of the abutment f, as represented at u, affords freedom of movement of the thumb-nail or pointed part employed to shift or tilt the bolt.

The stop device is preferablylocated within the inner side of one of the vertical bars of the upper sash as being thereby inaccessible from Without, and by having its position, say, six or eight inches above the meeting-rail either the upper or the lower sash may be open six or eight inches for ventilation or each may be moved to give openings at top and bottom aggregating the six or eight inches, and ofcourse attempts to further open the sashes from without will be defeated, and in order that further safeguarding provisions may be included in the device the bolt is provided in'its backwith a notch 41, in which a catch projection w of a spring-platew may engage in the manner represented in Fig. 1, said spring catch-plate being secured at its extremity at or near the inner end portion of the casing, the casing having a niche 3 at its outer end through which the catch projection w may play to engage and disengage the catchnotch 01, and the socket in which the casing is fitted is channeled out at its upper side, as represented at 2, to enable freedom of movement of the catch spring-plate. While it is easy to operate this last-described catch for the bolt by a person within the room, it is practically impossible for a person outside of the window to release the catch to enable him to inwardly crowd the stop-bolti Having thus described my invention, What I claim, and desire to secure by Letters Patent, is

l.v In a window-stop device, a barrel or case having at its outer end an opening and an abutment extending partially across said opening, a bolt having a step-shaped outer extremity and arranged to have a tilting move-' extremity, having. a groove-and-spline engagement in the casing, and having a .notch inits outer end and a spring in the innerend of the casing and reactingoutwardly against the bolt.

4. In a window-stop device, a cylindrical casinghaving an outer end opening, and awall or abutment extending partially across said opening, a boltwithin the casinghavinga step-shaped end, and a tapered side within such'end having aspline-and-lgroove engagement with the casing, and having in its back aonotch a spring in the innerendof the casing operable in an outward direction against the bolt, and a spring-catch secured vto the casing and adapted to engage inthenotch in the bolt.

Signed by me at Springfield, Massachusetts, in presence of two subscribing witnesses.

WALLACE F. SHAW.

l/Vitnesses:

WM. S. BELLOWS, A. V. LEAHY. 

